BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 235 67.1%
2 United States 54 15.4%
3 Germany 30 8.6%
4 Canada 17 4.9%
5 Taiwan 3 0.9%
6 India 3 0.9%
7 Switzerland 2 0.6%
8 Japan 1 0.3%
9 Norway 1 0.3%
10 Singapore 1 0.3%
11 Hong Kong 1 0.3%
12 Finland 1 0.3%
13 France 1 0.3%